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Main Title Eutrophication Management and Ecotoxicology [electronic resource] /
Author Scholten, Martin C. Th.
Other Authors
Author Title of a Work
Foekema, Edwin M.
Dokkum, Henno P.
Kaag, Nicolaas H.B.M.
Jak, Robbert G.
Publisher Springer Berlin Heidelberg,
Year Published 2005
Call Number GE300-350
ISBN 9783540266716
Subjects Environmental sciences ; Environmental management ; Ecology
Internet Access
Description Access URL
Collation V, 122 p. 75 illus. online resource.
Due to license restrictions, this resource is available to EPA employees and authorized contractors only
Contents Notes
Eutrophication and the Ecosystem -- Daphnid Grazing Ecology -- Toxic Reduction of Daphnid Grazing Effectiveness -- Field Observations of Daphnid Grazing -- New Perspectives for Eutrophication Management. Eutrophication of surface waters is generally recognised as a matter for envir- mental concern. Eutrophication is characterised by increased algal growth, with an increased incidence of toxic cyanobacteria blooms and a decrease in the ab- dance of species. Some of the manifest problems brought about by prolific algal biomass include: turbid waters; anoxic conditions; bad smell and chironomid and Culex midge plagues (Vollenweider 1990; Moss et al. 1996a; Carpenter et al. 1998). Such - trophication problems ("eutrophication" sensu lato) are generally considered to be the consequence of enhanced nutrient loadings ("eutrophication" sensu stricto) (Likens 1972; Vollenweider 1990; Reynolds 1992; Moss et al. 1996a; Carpenter et al. 1998). Therefore, the management of eutrophicated water bodies is usually primarily focused on the reduction of nutrient loading, supported by a policy of reduced environmental releases of phosphorus from laundry detergents, sewage and agriculture. However, it became apparent over the past decade, that reduced grazing of - gae by daphnids can be a crucial factor determining whether or not nutrient - richment will lead to eutrophication problems (Moss et al. 1991; Moss et al. 1996b; Reynolds 1994). Biomanipulation of eutrophicated shallow water bodies, thereby improving ecological conditions for daphnids, became a regular tool - plied in eutrophication management practice (Benndorf 1990; McQueen 1998; Harper et al. 1999). Biomanipulation is mainly focussed on the improvement of biological con- tions leading to a higher survival rate for daphnids as part of the aquatic foodweb.